The incident started when Hernandez got a call Monday morning from his boss, Salvador Orozco Saldana, who had spotted Soriano driving a truck into the apartment complex's garage, according to a police statement included in Santa Clara County court documents released Thursday.

Saldana, a maintenance supervisor at the complex, believed Soriano had burglarized his and other apartments in the past, documents said. He didn't think police had responded promptly to the burglaries and had no confidence officers would show up this time, so he told Hernandez to help him make a citizen's arrest, police said.

Hernandez armed himself with a gun he told police he had bought illegally for self-defense, investigators said. When he and his boss tried to hold Soriano, however, the suspected burglar broke free and Hernandez shot him, police said.